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A241323 Number of nX2 0..3 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..3 introduced in row major order 1
1, 8, 85, 1030, 13011, 165924, 2121033, 27129985, 347071157, 4440219758, 56806066313, 726751710350, 9297746189765, 118951351657555, 1521812314158867, 19469410910818078, 249083253366686135, 3186663809907191548 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A241328

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 17*a(n-1) -57*a(n-2) +43*a(n-3) -37*a(n-4) +109*a(n-5) -62*a(n-6) -48*a(n-8) +36*a(n-9) for n>10

EXAMPLE

Some solutions for n=4

..0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1

..0..2....2..1....2..2....1..1....2..3....0..2....2..1....2..1....2..1....1..1

..1..0....1..3....2..2....1..1....3..1....2..3....3..0....0..3....2..1....1..2

..3..0....1..2....0..2....1..2....2..1....0..2....2..3....0..3....2..3....0..2

CROSSREFS

Sequence in context: A093103 A288691 A300675 * A261501 A180582 A230621

Adjacent sequences:  A241320 A241321 A241322 * A241324 A241325 A241326

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 19 2014

STATUS

approved

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Last modified October 25 19:28 EDT 2020. Contains 338012 sequences. (Running on oeis4.)